Check the listing for details. Cam Timing Chain - Standard Duty DID - Honda Z50 CT70 SL70 XL70 CL70 TRX70 ATC70. Condition: New. Listed at 40.00 USD. **I combine shipping once all purchased items are packed and weighed and will refund any actual overage** My website - VintageHondaMinis.comLocated in East Orlando, FLSpecializing in the Vintage Honda CT70 Z50 minitrails and many more Youtube Channel @VintageHondaMinis - DIY Help content for these vintage Honda Mini Trails Z50 CT70 ATC70 etc **Over time your timing chain stretches. Most noticeable symptom will be an audible noise in the top end when running due to the looseness / slack in chain. More serious issues can arise by allowing the skipping of the chain --> Creating out of spec mechanical timing and possible shearing of the oil pump drive gear teeth resulting in oil pressure loss and engine failure! Always replace these wear items when refurbing your top end. These parts fit the vintage Honda 49cc 72cc engines listed below:Honda Z50 Z50a Z50r Mini TrailHonda CT70 CT70HHonda SL70 XL70Honda CL70Honda ATC70 TRX70Honda C70 PassportHonda ZB50 What is included in this kit (4 components):(1) Quantity - D.I.D. Japan 82 Link Timing Cam Chain (Loose, clear packaging is provided... no yellow box included)(1) Quantity - Tensioner Arm Guide Roller(1) Quantity - Oil Pump Shaft Drive Gear(1) Quantity - Cylinder Guide Roller **Also consider adding my Cam Chain Stage 2 (Camshaft Gear) and Stage 3 (Crankshaft Gear) for a complete working system refresh of parts - They all wear down together! - Check my store for those listings too!**